Printing machine



March 12, 1935. 1 KRELL 1,993,848

PRINTING MACHINE 3 Shees-Sheef.` 1

Filed May 27, 1932 lnnsbruckzr Sh'. 52

1704 mmm ma Kar: me

'nos Bar 11| Aug rms 'l 106 Lehmann IZL Alberi' |902 March 12, 1935. J. KRELL PRINTING MACHINE Filed May 27, 1932 5 Sheets-Sheet 2 11.1. f Krall March 12, 1935. J. KRELL 1,993,848

PRINTING MACHINE 3 Sheets-Sheet 3 Filed May 27, 1952 Patented Mar. 12, 1935 UNITED STATES PATENT OFFICE PRINTING MACHINE Joseph Krell, Berlin-Zehlendorf, Germany a machine, the plates Application May In Ge 27, 1932, Serial No.V 614,017 v rmany May 29, 1 31 10 Claims. (Cl. 10i-47) My invention relates to printing machines which are normally used for printing addresses and similar matter from printing plates. In such are fed past a normally 5 rocking printing arm with a printing platen.

More particularly, m chines of this general y invention relates'to matype which are equipped with a numbering device.

It is an object of'my -improved machine with invention to provide an a numbering device.

To this end, in combination with a movable printing arm, a. track,

means for feeding printing plates past the arm, and along the track,

a printing platen on to cooperate with the moves with the arm and controls the platen,

the arm, which is adapted plates, mechanism which and means for arresting the mechanism with respect to the arm when it is desired to print one of the plates; I provide a.

numbering device on the arm,

means which, like the above -said mechanism, move with the arm and move the numbering device into and out of active position, means for arresting the moving means when it is desired to move the numbering device into inactive position, for presenting paper and a bridge whichextends across the track to ,the numbering device. The mechanism formoving the platen and the means for moving the numbering device each include a lever which,

spect to the printing arm, and is connected to the platen or to the ing device by suitable move with the printing arm,

unless arrested with removes with the arm numberwhile the levers the members to means,

which the individual levers are respectively connected being either the platen or the numbering device, are not displaced from the position they initially assume with respect to the printing arm. II, however, the platen is controlled, or

mechanism by which the the means by which the numbering device is moved, is arrested with respect to the printing arm while the arm moves on, the corresponding member is displaced on the printing arm. By suitably operating the means for arresting the mechanism and the moving means, plates are printed and numbered, or printed without being numbered, or neither printed nor numbered, as will be described. When the mechanism or moving means'has been released by the means for arresting it, it is enby friction andreturns the corresponding member into its initial position.

It has already able printing platen device at a movable pr been proposedto provide a movand a movable numbering inting arm but the aforesaid mechanism ior controlling the platen and the means for moving the numbering device, are novel.

By way of example a machine will be described in which the addresses of electors are printed and 5 numbered and in which the denominations of the districts where the electors live, are printed but not numbered. The numbering device is in active or printing position while the addresses are printed, and is moved into inactive or nonl0 printing position while the districts are printed.

The bridge which, as described, extends across the track is equipped with a ilxed printing or impression plate which may be in or on the bridge. The numbering device is on the printing arm just above the impression plate in the bridge and when the printing arm descends and the device is in active position, it will print the number for which it has been set, at the side of the print from the corresponding printing plate.

The sheets, envelopes or the like on which the machine prints, are supported at two distinct levels, i. e. on the printing plates and on the bridge but that does not matter because the two levels are only slightly different. The inking ribbon may be so wide as to extend over the plates and the bridge but there might also be an individual ribbon for the plates and the bridge.

If the numbering device is fed as often as it has printed a number, an automatic counter may be provided which is moved on when a number has been printed.

lThe means for feeding the numbering device after the printing of each number is operatively connected to one of the aforesaid levers which moves with the printing arm, is mounted on the shaft or pivot about which the printing arm is mounted to rock, and is entrained by the printing arm by a friction clutch or other suitable means. Generally, the mechanism is so designed that it will perform relative movement to the printing arm and will feed the numbering ldevice only after the normal or address-printing plates have been printed, but not after the special or district- 4" printing plates have been printed.

As mentioned, in a machine for printing normal (address) and special (district) plates, only the normal plates with the addresses of the elec- 50 tors are numbered but not the special plates with the denomination of the districts.

My invention may also be adapted to machines in which certain plates are repeatedly printed, means being provided for feeding the numbering at the head or free end device only after a fresh to the printing station.

In the accompanying drawings, a machine embodying my invention and a specimen of a selector list are illustrated by way of example.

In the drawings Figs. 1, 2, 4 and 5 are sectional elevations of the machine taken on the line I-I of the plan view in Fig. 3,

Figs. 1a is an end elevation showing diagrammatically some parts of the machine, viewed from the left in Fig. 1,

Fig. 4a is a detail illustration showing a portion of Fig. 4, drawn to a larger scale,

Figs. 6 to 9 are diagrams illustrating the operation of the machine with normal (addressprinting) and special (district-printing) plates, and Fig. 10 illustrates the elector list.

Referring now to the drawings, l is the frame or table of the machine and 2 is its printing arm which is mounted to rock about a shaft or pivot 3, as is known in such machines. 4 is the platen of the printing arm by which the paper 27 is depressed onto a ribbon 6 on the printing plate 5' which is at the printing station below the head of the printing arm 2. The printing plates 5 are piled in a magazine 8, Fig. 3, from which they are fed toward the printing station in their longitudinal direction along a track 7. The magazine 8 is so arranged with respect to the printing station that there are two printing plates 5 between the magazine 8 and the plate which is at the printing station and marked 5. The means for rocking the printing arm 2 about its shaft or pivot 3 and for feeding the plates 5 along the track 7 are old in the art, and not shown. Means for rocking the printing arm may be designed, for instance, as shown and described in U. S. Patent 1,681,525, Aug. 21, 1928, to Duncan, for Printing machine. In this patent, a rotary member is connected to a rocking lever which in turn is connected to the printing arm and imparts rocking movement to the arm. The front end of a feed block and of a link 156, both forming part of the feeding means, are shown broken away in Fig. 3. Suitable feeding means are described in my prior U. S. Patents 1,700,803, February 5, 1928, and 1,706,531, March 26, 1929.

The platen 4 is mounted to slide in the head of the printing arm 2. The mechanism for reciprocating the platen 4 is old in the art and comprises a rocking lever 14 which is mounted on the shaft or pivot 3 and is entrained by friction with the printing arm 2. Such a mechanism is described in my above said prior patents. The mechanism further comprises, a shaft 43 in a lug 2" on the printing arm, a crank 9 on the head of the printing arm, a bellcrank 11, 12 on the shaft 43, a link 10 connecting the arm 11 of the bellcrank to the crank 9, and a link 13 connecting the lever 14 to the arm 12. The system pushes the platen 4 out of the head when the plate 5 at the printing station is to be printed. While the lever 14 partakes in the rocking movement of the printing arm 2, the platen 4 is not pushed out and the plates 5' at the printing station are skipped. When it is desired to print a plate the plate 4 is advanced byf arresting the rocking lever 14, as is old in the art and described in my said prior Patent 1,700,803. As described in this patent, the printing arm and the mechanism move as a single unit if the mechanism is not arrested and free to move with the printing arm. When the rocking lever which is entrained with plate has been moved the printing arm by friction, however, is arrested, it no longer moves with the printing arm and by the relative displacement of the mechanism and the printing arm the platen is moved into active position for printing a plate at the printing station. While the mechanism is free to move with the printing arm, the plates are skipped as the platen is not in active position. The position in which the rocking lever 14 must be arrested, is shown in Fig. 1 with the rocking printing arm 2 elevated, and the corresponding position with the printing arm lowered, is shown in Fig. 2. A bridge 29 is provided for a purpose to be explained below. It extends across the track 7 along whch the printing plates 5 are fed past the printing station below the printing arm 2, as best seen in Figs. la and 3. The paper 27 is placed on the ribbon 6 which is above the printing plate 5' at the printing station. The paper andthe ribbon are also on the bridge 29, Fig. la, but the top of the bridge is at a higher level than the plate 5'. If viewed from the magazine 8, as in Fig. 2, the printing arm 2, its platen 4 and the printing station are behind the bridge, and the lower portion of the platen is partly concealed by the bridge, and shown in dotted lines in Fig.`2. When the printing arm descends, the platen 4 depresses the paper 27 and the ribbon 6 partly to the level of the plate 5 while the balance of the paper and the ribbon remain on the higher level of the bridge 29. The means for arresting the lever 14 are old in the art and include an electromagnet 17 below the table 1 which is pivoted at one end in a frame or bracket below the table 1 at 160, while its other end has a tooth 15 for engaging the lower end of lever 14, as best seen in Figs. 6 to 9, and a catch 18 which is fulcrumed at 181 and has a spring 19 tending to throw its yfree end `into engagement with the attracted armature 16. By means not shown the electromagnet 17 is excited asv often as a plate to be printed is at the printing station. While the plate moves into position at the printing station, the printing arm 2 is elevated and the excited electromagnet 17 attracts the armature 16 into the path of the lower end of lever 14 where it is held by the catch 18. The armature remains attracted until a fresh plate is advanced toward the printing station and causes the electromagnet to be excited afresh, or to become deenergized, as the case may be.

20 is the numbering device which is mounted to rock about a pivot 21 in a lug 2 at the side of the printing arm 2. The bridge 29 serves for presenting the paper 27 to the numbering device 20 and may be equipped with an impression plate 28 of rubber or the like. 22 is a slide at the lower end of the numbering device 20 by which it is fed. The feed slide is operated by a link 23 which is pivoted to the slide at one end and to a. pin 24 on the lever 14 at its other, slotted, end. is moved from the position Fig. 1 into the position Fig. 2 and the numbering device is moved on or fed, as often as the printing arm 2 descends, provided the lever 14 is arrested, by a displacement of the link 23 in the direction of arrow 26.

In the position illustrated in Fig. 2 the printing plate 5' at the printing station behind the bridge 29 and the number for which the numbering device has been set by the feeding link 23, are printed on the sheet 27. 'I'he difference in level at 5' and 28 is negligible, as mentioned, and the sheet 27 will readily adapt itself to the difference. Obviously, any number of superimposed sheets may be printed by placing carbon paper between the individual sheets. Fig. .10 shows an elector list as a sample of the work done by the machine, Innsbruckerstn`52 and Kufsteinerstn 12" are the district'd Reichelt, etc., are the names of electors in the districts. The numbers, 7703, etc., are printed only opposite the names of the electors, but not opposite the names of the districts.

The means for moving the numbering device 20 for the numbers 7703 etc., into and out of active position with respect to the impression plate 28 on the bridge 29, will now be described. Mounted to rock on shaft 3 and adapted to be entrained by the printing arm 2 by friction, like the lever 14, is a lever 30, as best distinguished in Figs. 2 and 5. 'I'he lever 30 is connected to a crank 34 on the pivot 21 of the numbering device 20 by a link 33 which is connected to the lever 30 at 33' and to the pin 36 of crank 34 by a slotted eye 35 at its free en The lever 30 is normally entrained by the printing arm 2 and held in the position corresponding to the active or vertical position of the numbering. device 20, Figs. 1 and 2, but when the lever 30 is arrested it moves the numbering device 20 into its inactive or inclined position, Figs. 4 and 5. The lever 30 is arrested by a pawl 32 which is pivoted on the amature 16 at 48, Figs. 6 to 9, and has a rearward extension 32'. The front end of the pawl is heaviest so that it tends to turn clockwise by gravity. The lower end of lever 30 is recessed at 31 for cooperation with the front end of pawl 32. When the pawl'registers with the recess 31, the lever 30 is free to move with the printing arm 2 and the numbering device remains in its active or vertical position.

For locking the numbering device 20 in its active position, I have provided a catch 38 on a pin 37 on the lug 2', which, under the action of a spring, 38', Fig. 4a, bears on the crank pin 36 with its free end and on a tooth 40 on the link 33 with a pin 39. The catch 38 prevents rocking of the numbering device 20 under the inuence of the feeding motion of slide 22.

41 is a link which is connected to the upper end of lever 30 and to a lever 42 on the pin 43. 46 is a counter on a bracket 47 which may be connected to the magazine 8, Fig. 3. 44 is a rod connecting the free end of lever 42 to a crank 45 on the counter.

The means for controlling the pawl 32 will now be described. 50 is a lever which is pivoted at 49 in the frame of the electromagnet 17, and 51 is a spring which tends to turn the lever to the right in Fig. 1. The free end of the lever 50 bears on the rearward extension 32 of the pawl 32, raising its front end. 52 is a Bowden cable which at one end is connected to the lever 50 and at the other to a control lever 53 fulcrumed in the frame 1 at 54, Figs. 3 and 6 to 9. 55 is a roller at the inner end of the control lever 53 which under 4the action of spring 51 tends to project into the track 7. This is prevented by the normal plates 5 which have plain sides, Figs. 8 and 9, but permitted by the special plates 5" which are notched at 56, Figs. 6 and 7. While the control lever 53 is retained by the plates the lever 50 does not interfere with the rearward extension 32' of 57 is a locking lever which is mounted to turn about a pivot 58 against the action of a spring 59 and at-its free end has two faces 65 and 66 at right angles to each other for cooperation with the rearward extension 32'. The spring pawl 32, Figs. 8 and 9.

tends to throw the free end of the locking lever into engagement with the end of the extension 32'. 60 is a curved lever which is fulcrumed on the frame oi' the electromagne't 17 at 61, Fig. 3, which with one end engages the upper portion of lever 57 and with its other engages the catch 18 for the amature 16.

The printing plates are piled in the magazine 8 as required for the desired operation of the machine, normal or address plates 5 alternating with special or district plates 5". equipped with lugs or other means 64 which are arranged Ain a definite position on each plate. In Figs. 6 to 9, the plates move from the right to the left toward the printing station.

only to lugs 64 in a appear that the lugs on definite position, and it will the normal plates 5 are in another position than those on the special' plates 5". The plates are piled in the magazine 8 as follows: the district plate Innsbruckerstrasse is in the lowermost position, then follow the three address platesv Reichelt, Schulze", Berger,l district plate Kufsteinerstrasse, address plates Lehmann, Klose,', etc.

It will appear from the drawings, and particularly from Fig. 1a, that the sheet 27 is above the ribbon 6 and that the ribbon 6 is above the printing plate at 5' and also above the bridge 29,'with its impression plate 28, while the printing plates move along the track 7 in the table 1 and below the bridge 29. The printing plates act on the paper like the types of a type-writing machine, pressing the ribbon 6 against the paper 27 which is supported by the platen 4 on its upper side. The numbering device 20, on the other hand, acts on the paper 27 from above and the numbers are printed with the paper 27 held between the ribbon and the impression plate 28. As the ribbon 6 is on the same side of the paper 27, the printing plates and the numbers are printed on the same side, although the printingplates are below, and the types of the numbering device are above, the paper.

In operation, the lowermost plate 5", Innsbruckerstrasse, is fed forward and will arrive at the printing station after three operations of the feeding means 155, 156, Fig. 3. The plates close the selector switch by their lugs 64 only when at the printing station, and therefore the electromagnet is not excited during the first two operations of the machine. The parts assume the position Fig. 5, in which the platen 4 is not advanced and the numbering device 20 is moved aside out of its active or vertical position. No print is made and the counter 46 is not operated. The corresponding position of the parts under the control of electromagnet 17 is shown in Fig. 6. The magnet is not exc'ted and has dropped its armature 16. The lever 14 is not interfered with by the tooth 15 at the end of the armature 16 and does not advance the platen 4. While there is no plate yet at the printing station, conditions are the same as if the roller 55 at the control lever 53 had entered a notch 56 in a district plate 5", as shown in Fig. 6. The lever 50 which is connected to the Bowden cable 52, bears on the rear extension 32' of pawl 32, raising its front end. The front end moves out of registering relation to the recess 31 in the lower end of lever 30 and the lever is arrested. When the printing arm 2 descends the link 33 moves the numbering device 20 into its inactive position, Fig. 5. The counter 46 is not operated, as its All plates are The 'means for exciting the electromagnet 17 respond crank 45 only moves down Fig. 5.

as i'ar as shown in The lowermost plate 5", Innsbrucker-strasse,

now arrives at the printing station. However, it will only be printed if its lug 64 is in the proper position. In Fig. 6 it has been assumed that the sponds to Fig. 4 in which the platen 4 is advanced and the plate Innsbruckerstrasse is printed but the numbering device 20 is in its inactive position and the counter 46 is not operated. 'I'his is due to the fact that when the excited electromagnet 17 attracts its armature 16 the lever 14 is arrested and the platen 4 advanced. The position of the pawl 32 undergoes a slight alteration but this is without inuence as the free end of pawl 32 is still within reach of the lever 30, and not o1' its recess 31. The numbering device 20 therefore is still in the inactive position and the only diierence is that in Fig. 5 the pin 25 is at the inner end of the slot 24- in link 23.

Now follows the address plate Reichelt which is to be printed. 'I'his is a normal plate, i. e., one with a plain unnotched edge, Fig. 8. The lug 64 of this plate is so positioned that the electromagnet 17 is excited. As soon as the district or special plate 5, Innsbruckerstrasse, has moved past the roller 55 of the control lever 53, the roller rides on the edge of the plate, the Bowden cable 52 is put under tension and the lever 50 is rocked into the position Figs. l'and 8, in which it releases the rearward extension 32' of pawl 32. The lever 50 remains in this position until another special plate, in the present instance the district plate Kufsteinerstrasse, cornes along with its notched edge and releases the roller 55. The position of the parts for a normal or address plate which is to be printed, is shown in Fig. 8. The tooth 15 on the armature 16 arrests the lever 14 so that the platen 4 is advanced 'as described but the pawl 32 is now opposite the recess 31 in the lever 30 and the lever is free to move with the printdescends the platen 4 and the numbering device 20 are positioned as shown in Fig. 2. The printing plate prints the name of Reichelt and the numbering device prints his number, 7703. At the same time, the movement of lever 30 with the printing arm causes the counter crank 45 lower than when the lever 30 is arrested, and the last portion of the crank stroke feeds the counter for one number, i. e. the printing of Reichelt on the list 27 is counted. When the printing arm 2 is elevated, the parts assume the position Fig. 1 while the numbering device 20 is fed for one number by moving the slide 22 back from the position Fig. 2 into the position Fig. 1. This goes on while address plates are printed and their printsnumbered.4 If there is a plate which has the lug 64 notin the proper position, Fig. 9, the electromagnet 17 is not excited and its armature 16, with the tooth 15, does not arrest the lever 14 and the platen 4 is not advanced. When the armature 16 is dropped the pivot 48 of the pawl 32 is slightly lowered as compared with Fig. 8, and the consequence is that the pawl arrests the lever 30, moving the numbering device into its inoperative position. This corresponds to Fig. 5. The plate is not printed, no number is printed, and the counter 46 is not operated.

When the numbering device 20 is moved into its inactive position the catch 38 is thrown over into the position Fig. 4 by" the cooperation of link 33-which moves in thev direction of arrow 26, Figs. 1 and 4,.-with the pin 39. T'he slotted eye 35 in link 33 permits throwing out of the catch 38 before Athe numbering device 20 is rocked about its pivot 21.

Too early movement oi' pawll 32 from the position Fig. .7 whena special plate is fed along the track 7, with the heavier frontend of the pawl moving down by gravity, is prevented by locking lever 57 which is held in the position Fig. 7 by spring 59. 'Ihis lever is rocked in the direction 63 by the lever 60 as often as a fresh lprinting plate is fed to the printing station by the catch 18 holding the armature 16 in its attracted position, is swung out at this moment in the direction 62, Figs. 2 and 3. The rocking of lever 57 in the direction 63 permits pawl 32 to rock downwards for a certain distance about its pivot 48 in the armature 16 with its iront end, the rear extension 32', or a pin, not shown, on the extension, bearing on the stepped fore the rocking of the lever the rear extension engaged the lower face 66 of the locking lever. It will appear from this description, that the platen 4 and the numbering device 20 move with the printing arm 2 but not with respect to the printing arm, while the levers 14 and 30 are not arrested by the tooth 15 or the pawl 32, respectively, and that the platen 4 remains in its in- `active position while its mechanism moves with the printing arm. When t-he lever 14 is arrested, the platen 4 is moved into active position and the plate it meets at the printing station, is printed.

In a similar manner, the numbering device 20 is moved by its lever 30. When a plate is skipped as shown in Fig. 5, the platen 4 is not advanced and the numbering device 20 is moved into inactive position as its lever 30 has been arrested by the pawl 32. A plate may be printed but not numbered as described for the plate Innsbruckerstrasse, if the lever l4'of the platen-operating mechanism is arrested by the tooth 15 on the armature 16 and the lever 30 of the means for moving the numbering device 20 is arrested by the pawl 32.

When a plate is both printed and numbered, as the plate Reichelt, the lever 14 of the platen mechanism remains arrested but the pawl 32 releases the lever 30 of the numbering-device moving means so that the lever 30 is entrained by the printing arm 2 by friction and returns the numbering device into its active position in which it is locked by the catch 38, as described.

'Ihe catch 18 which retains the armature 16 and the tooth 15, may be thrown out by any suitable automatic means which have not been illustrated but are described in my said prior Patent 1,700,803 in which the catch is released when a fresh plate is fed forward. l

I claim:

l. In a printing machine, amovable printing arm, atrack,meansforfeedingprintingplates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move saidnumbering device into and out 01' face 65 of locking lever 57 while beits active position with respect to said bridge, and means for arresting said moving means with respect to said arm for moving said numbering device into inactive position.

2. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, means for arresting said moving means with respect to said arm for moving said numbering device into inactive position, and means operatively connected to said moving means for locking said numbering device in its active position, and for releasing it before moving it into its inactive position.

3. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism-With respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, and comprising a rocking lever adapted to be entrained by friction by said printing arm, and means for arresting said lever with respect to said arm for moving said numbering device into inactive position.

4. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, means for arresting said moving means with respect to said arm for moving said numbering device into inactive position, and means operated by said printing plates for operating said arresting means.

5. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to con-trol said platen, means comprising the armature of an electro-magnet for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, and a pawl fulcrumed on 4said armature for arresting said moving means with respect to said arm for moving said numbering device into inactive position, said pawl being so designed as to engage and arrest said moving means, and means adapted to be operated by said plates for regulating the relative position of said pawl and said moving means.

6. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means comprising the armature of an electromagnet for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, a pawl fulcrumed-on said armature for arresting said moving means with respect to said arm for moving said numbering device into inactive position, a lever for moving said pawl from its releasing into its arresting position, a spring tending to apply said lever to said pawl, and means operated by said printing plates for operating said lever.

7. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted'to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, means for arresting said moving means with respect to said arm for moving said numbering device into inactive position, means for feeding the type of said numbering device, and means operatively connecting said feeding means to said mechanism.

8. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across said track for presenting paper to said numbering device, means adapted to move with said arm and to move said numbering device into and out of its active position with respect to said bridge, means for arresting said moving means with respect to said arm for numbering device into inactive position, means for .feeding the type of said numbering device, and means operatively connecting said feeding means to said mechanism and including a member permitting relative movement of said connecting means and said mechanism.

9. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable printing platen on said arm adapted to cooperate with said plate mechanism adapted to move with said arm and to control said platen, means for moving said arresting said mechanism with respect to said ann for moving said platen into active position, a. numbering device on said arm, a bridge extending across said track for to said numbering device, means adapted to move with said arm and to move said numbering device into andaouft of its active position with respect to said bridge, a counter operatively connected to said moving means, and means for arresting said last mentioned moving means with respect to said arm for moving said numbering device into inactive position.

10. In a printing machine, a movable printing arm, a track, means for feeding printing plates past said arm along said track, a movable presenting paperL printing platen on said armadapted to cooperate with said plates, mechanism adapted to move with said arm and to control said platen, means for arresting said mechanism with respect to said arm for moving said platen into active position, a numbering device on said arm, a bridge extending across `said track and having an impression plate, for cooperation with said numbering device. means adapted to move with said arm and to move said numbering device into and out of'its active position with respect to said impression plate, and means for arresting said moving means with respect to said arm for moving said numbering device into inactive position. JOSEPH KRELL. 

